Specimen identification utilizing autocorrelation functions



July 2Q, 1965 1.. P. HORWITZ ETAL 3,196,392

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS 50Sheets-Sheet 1 Filed July 25. 1960 INVENTORS LAWRENCE R HORWITZ GLENMORELSHELTON JR A TORNEY 30 Sheets-Sheet 2- L P. HORWITZ ETAL SPECIMENIDENTIFICATION UTILIZING AUI'OCORRELATION FUNCTIONS July 20, 1965 FlledJuly 25 1960 PIC-3.4

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS Filed July25, 1960 30 Sheets-Sheet 3 July 20, 1965 P. HORWITZ ETAL 3,

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July 20, 1965 L. P. I-IoRwITz ETAL 3,1932

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS Filed July25. 1960 so Sheets-Sheet 4.

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AMPLIFIER HUM FIGA DELAY CIRCUIT SINGLE-SHOT MULTIVIBRATOR I DELAY SS 0DELAY 1 O DELAY 1 0 FIRST STAGE J T T A SET o 3 R 5 R 3 R g SHIFLPULSESJuly 20, 1965 1.. P. HORWITZ ETAL 3,396,39

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS Filed July25. 1960 50 Sheets-Sheet 5 FIG.15 COUNTER l p ufl s 1 1 I READOUTATG R oc 0 RESET T0 0 F 5 5- PULSE COUNTER DELAY NT PULSES COU *CSQ g s 1 S 1RESET T0 0 R 0 READOUT 1 TB 79 R 0 ATO,5,10,15,ETC L A a J READ-ONLYREGISTER %20uTPuT 42 $2 WRITE READ REGISTER 20UTPUT 1 2* 2 w 1 o 1 o 1 0s R s R s R 4 A AA A a RESET T ALus RESETTOO 1 2|NPUT 2* 2 July 20, 1965P. HORWlTZ ETAL 3, 53

SPECIMEN IDENTIFICATION UTILIZING AUTOGORRELATION FUNCTIONS Filed July25, 1960 30 Sheets-Sheet 6 July 20, 1965 P. HORWITZ ETAL 9 3 SPECIMENIDENTIFICATION UTILIZING AUTOCORRELATIQN FUNCTIONS 30 Sheets-Sheet 8Filed July 25, 1960 I z: E z: E :3 :3 z:

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July 20, 1965 L. P. HORWITZ ETAL 3,395,392

SPECIMEN IDENTIFICATION UTILIZING AUTQCORRELATION FUNCTIONS 30Sheets-Sheet 9 Filed July 25. 1960 nmNdI July 20, 1965 L. P. HORWITZETAL SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS 3OSheets-Sheet 10 Filed July 25. 1960 mm wE July 2%, 1965 3,39

L. P. HORWITZ ETAL SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATIONFUNCTIONS Filed July 25, 1960 E SH OvO HMO rook BOON 30 Sheets-Sheet 11AU TOCORRELATION FUNCTION 5111 26, 1965 L. P. HORWITZ ETAL 9 3 SPECIMENIDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS Filed July 25. 196030 Sheets-Sheet l5 NORMAUZED COMPARISON REFERENCE PATTERNNORMAL1ZED"SECOND-D1FFERENCE" COMPARISON REFERENCE PATTERN 1 2 3 4 5 6 78 9 O July 20, 1965 L. P. HORWETZ ETAL 3,195,392

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS 3OSheets-Sheet 16 Filed July 25. 1960 Nmmd m xxx x xxx x xx xxx xx xxxxxxxxxxxxx xxxxxxxx xxxxx x xxxxxxx xxxx xxxxx xx xxx xxx xxx xxx xx xx xxxxxxxxxxxxxx xxxxxxxxxxxx xxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxx xxx xxx xx x x xxxx xx xx xxxxx xxxxx xxx xxx xxx xx x x xx x xx xxx xxx Ommd m Ommd m 000 xxx x hm QE hzou 3m L. P.HORWITZ ETAL SPECIMEN IDENTIFICATION UTILIZING July 20, 1965 3,196,32

AUTOCORRELATION FUNCTIONS 3O Sheets-Sheet 17 Filed July 25. 1960 mwmd mNmmd m ommd x x x x x x xx x x x x xxxxx x xxxxxxxxx xxxxxx xxxxxxxxxx xxxx xxxxxxxxxx xxxxx x xxxx x xxx x xxx x xxx xxx x xxx x xxx xxx x xxxxx xxxxxxxxxxxxxx x xxxx xxxxxx xxxxxxxxxx xx xxxxxxxxxxxxxx xxxxxxxxxxxxx xxx xxx xxx xx xx xx xxxxx xxxx xx x xxx xxx xxx x x xxx xxx xxxxx xxxx xx xxxxxx xxxxx xx xxxxxxxxx xx xx x x x xx x x xx x x x x x xX X xxx x vwmd m wmmd m mmwd O00; m mmm O m Ommd 4 xxxxx xxxxxxxx xxxxxxxxxxxxxxx x xxx xxxxxxxx xxx xxxx xxx xxx xxx xxx xxx xxx xxx xxx xx xxxx xx xxxx xx xxxxxxx xxxxxxxxxx xxxx xx xxx xx xx .xx xxx xx xxx xxxxxx xx xxx xx xxx xxx xxxxxxxxxxxxx xxxxxxxxxxx xx x x P20| 4 m9 July20, 1965 L. P. HORWITZ ETAL SPECIMEN IDENTIFICATION UTILIZINGAUTOCORRELATION FUNCTIONS 30 Sheets-Sheet 18 Filed July 25. 1960 125525my: 225m;

July 20, 1965 L. P. HORWITZ ETAL 3,196,392

SPECIMEN IDENTIFICATION UTILIZING AUTOCORRELATION FUNCTIONS Filed July25, 1960 30 Sheets-Sheet l9 0 FIG. 390 VERTICAL SWEEP GEN I nomzoum wL la sweep GEN & "L-CL0CK PULSES 213/ 1/211 1 zos gg START PULSE 2/35 5 1/2229 v I CLOCK gfiv a EAD 0 AT 44 11/2 PULSES 251 CQUNT R U1 UNIT I KRESET T0 0 I PULSES COUNTER 53 READ our AT 4s 2 Y\1 o OR 22a 215 22 READOUT AT '0' fl ,8 B E/ COUNTER PULSES RESET T0 '0' ,219 coum PULSESCOUNTER I READ our AT 8' 2n RESET TO '0' FIG 3 FIG FIG. FIG. FIG. FIG.FtG' v 39a 39b 39c 39d 39e 39f July 20, 1965 L. P. HORWITZ ETAL3,196,392

SPECIMEN IDENTIFICATION UTILIZING AUTOGORRELATION FUNCTIONS Filed July25. 1960 30 Sheets-Sheet Z0 SHIFT REGISTER FIG. 39b

RESET 45PULSE CLOCK 265 PULSES 265 RESET 5 TQ'O SHlFT P SES O 1

12. A SPECIMEN IDENTIFICATION APPARATUS COMPRISING IN COMBINATION:ELECTRONIC MEANS FOR GENERATING AN AUTOCORROLATION FUNCTION OF SPECIMENDATA LOCATED THROUGHOUT THE SPECIMEN, AND ELECTRONIC MEANS FOR COMPARINGSAID